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test_percolator.py
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test_percolator.py
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# -*- coding: utf-8 -*-
import unittest
#import logging
import pyb
import gc
#import math
#import random
import uctypes
from ws2812 import WS2812 #, Pixel, PREALLOCATE, CACHE, RECREATE
from lights import Lights
from percolator import Percolator
#log = logging.getLogger("test_ws2812")
def tg(led_count, start):
def triple(n):
for i in range(3):
yield (n + i) & 0xff
for i in range(led_count):
yield triple(start + 3*i)
class PercolatorTestCase(unittest.TestCase):
def setUp(self):
#logging.basicConfig(level=logging.INFO)
#random.seed("WSlice")
self.ws = ws = WS2812(1,64)
for i in range(len(ws)):
ws[i] = (i, 2*i, 3*i)
self.p = Percolator(ws)
def tearDown(self):
self.ws = self.p = None
gc.collect()
def test_render_init(self):
# A Percolator is initially in a state that renders all off
self.p.render()
self.assertTrue(all(sum(v)==0 for v in self.ws))
def test_render_time(self):
# Rendering takes the expected amount of time
n = 10
t0 = pyb.micros()
for i in range(n):
self.p.render()
dt = pyb.elapsed_micros(t0)
average_ms = dt / (n * 1000)
print("%d renders average %f ms" % (n, average_ms), end='')
self.assertTrue(average_ms < 15, "average render time %f ms" % (average_ms))
def test_render_at_index_0(self):
# A Percolator can render itself to the backing LEDs
lattice = self.p.lattice
ref = (12, 34, 56)
for i, v in enumerate(ref):
lattice[0][i] = v
self.p.render()
self.assertEqual(tuple(self.ws[0]), ref)
self.assertTrue(all(sum(v)==0 for v in self.ws[1:]))
def test_render_at_index_0_various_brightness(self):
# A Percolator can render itself to the backing LEDs with controlled brightness
lattice = self.p.lattice
color = (12, 34, 56)
ref = [0] * 3
for brightness in (1.0, 0.5, 0.1, 0.01, 3/17, 1/254, 1/255, 1/256, 0.0):
print(' %r' % brightness, end='')
self.p.brightness = brightness
for i, v in enumerate(color):
lattice[0][i] = v
ref[i] = round(brightness * v)
self.p.render()
self.assertEqual(tuple(self.ws[0]), tuple(ref))
self.assertTrue(all(sum(v)==0 for v in self.ws[1:]))
def test_render_at_several_positions(self):
# A Percolator can render itself to the backing LEDs
lattice = self.p.lattice
for k, g in enumerate(tg(64, 0)):
for i, v in enumerate(g):
lattice[k][i] = v
self.p.render()
for led, g in zip(self.ws, tg(64,0)):
self.assertEqual(tuple(led), tuple(g))
def main():
unittest.main()
return
# Burn-in test:
while True:
try:
unittest.main()
except MemoryError as e:
#print("MemoryError:", e)
pyb.info()
raise
if __name__ == '__main__':
main()